Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12419523 | Sensor device, catheter, and system provided with sensor device | — | 2025-09-23 |
| 7995309 | Magnetic recording medium, magnetic signal reproduction method and magnetic signal reproduction system | Yutaka Kakuishi, Ryota Suzuki | 2011-08-09 |
| 5861713 | Low voltage electron beam display apparatus having brightness increased by reducing an oxide inevitably formed on a surface of an oxisulfide phosphor on manufacture | Yojiro Kondo, Toshihiko Ayusawa, Hidehito Mori, Osamu Yamasita, Kazuo Kaneko +6 more | 1999-01-19 |
| 5532990 | Optical information processing method and apparatus including measuring and correcting the offset of a tracking error signal from an output of a photodetector using a vibrating objective lens | Osamu Koyama, Tadashi Kato, Yoshihiko Watanabe, Hisatoshi Baba, Hirotake Ando +3 more | 1996-07-02 |
| 5517475 | Optical information processing apparatus in which the offset of a tracking error signal is corrected in accordance with a relationship stored in a memory, in response to a position detection output signal | Osamu Koyama, Tadashi Kato, Yoshihiko Watanabe, Hisatoshi Baba, Hirotake Ando +3 more | 1996-05-14 |
| 5404346 | Optical information processing apparatus including a correction circuit for correcting non-linearity of an output of a position detection circuit | Osamu Koyama, Tadashi Kato, Yoshihiko Watanabe, Hisatoshi Baba, Hirotake Ando +3 more | 1995-04-04 |
| 5347503 | Optical information processing apparatus for correcting linearity of a photosensor output with respect to power of an emitted light beam | Osamu Koyama, Tadashi Kato, Yoshihiko Watanabe, Hisatoshi Baba, Hirotake Ando +3 more | 1994-09-13 |
| 5247505 | Information recording method for reciprocally recording and verifying information | Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Hiroshi Matsuoka, Kazuhiko Matsuoka +4 more | 1993-09-21 |
| 5195081 | Optical apparatus for effecting recording and/or reproducing of information on/from and optical information recording medium | — | 1993-03-16 |
| 5119356 | Information recording and reproducing apparatus including detection of whether an information recording medium has been normally loaded into the apparatus | Kazuhiko Matsuoka | 1992-06-02 |
| 5018123 | Optical information recording medium and method for recording information on said medium and reproducing information therefrom | Hideki Hosoya, Akio Aoki, Masahiko Enari, Hiroshi Matsuoka, Kazuhiko Matsuoka +4 more | 1991-05-21 |
| 5010534 | Optical information recording-reproducing apparatus | Masahiko Enari, Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Hiroshi Matsuoka +4 more | 1991-04-23 |
| 4922351 | Optical information recording and reproducing apparatus | Kenichi Suzuki, Satoshi Shikichi, Fumiaki Kawaguchi, Hiroshi Matsuoka, Kazuhiko Matsuoka +4 more | 1990-05-01 |
| 4912697 | Apparatus and method for preventing recording errors due to a reduction in the relative speed between an information carrying light beam and a recording medium | Masahiko Enari, Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Hiroshi Matsuoka +4 more | 1990-03-27 |
| 4872743 | Varifocal optical element | Takeshi Baba, Kazuhiko Matsuoka, Kazuo Minoura, Atsushi Someya, Masayuki Suzuki | 1989-10-10 |
| 4865426 | Variable aberration imaging optical system | Kazuhiko Matsuoka, Kazuo Minoura, Takeshi Baba, Atsushi Someya, Yukuo Nishimura | 1989-09-12 |
| 4848879 | Light modulating device | Yukuo Nishimura, Yuko Miyajima, Kazuo Minoura, Takeshi Baba, Kazuhiko Matsuoka +1 more | 1989-07-18 |
| 4787075 | Optical information recording medium and apparatus for recording/reproducing information using the same | Hiroshi Matsuoka, Akio Aoki, Hideki Hosoya, Kazuhiko Matsuoka, Kazuo Minoura +4 more | 1988-11-22 |
| 4783141 | Array lens | Takeshi Baba, Hiroyuki Imataki, Takashi Serizawa, Hiroyasu Nose | 1988-11-08 |
| 4783155 | Optical device with variably shaped optical surface and a method for varying the focal length | Hiroyuki Imataki, Takashi Serizawa, Takeshi Baba, Hiroyasu Nose | 1988-11-08 |
| 4781445 | Optical device having positionally changeable optical surfaces and a method of varying an image forming position | Takeshi Baba, Takashi Serizawa, Hiroyuki Imataki, Hiroyasu Nose | 1988-11-01 |
| 4729641 | Functional optical element having a non-flat planar interface with variable-index medium | Kazuhiko Matsuoka, Kazuo Minoura, Yukuo Nishimura, Takeshi Baba, Atsushi Someya +2 more | 1988-03-08 |
| 4714326 | Method and element for optical modulation | Hiroyuki Imataki, Takashi Serizawa, Takeshi Baba, Hiroyasu Nose | 1987-12-22 |
| 4712882 | Variable focal length lens | Takeshi Baba, Hiroyuki Imataki, Takashi Serizawa, Hiroyasu Nose | 1987-12-15 |
| 4641920 | Optical element having the function of changing the cross-sectional intensity distribution of a light beam | Kazuhiko Matsuoka, Kazuo Minoura, Takesi Baba, Atsushi Someya | 1987-02-10 |